Ionizer



FIG. 1 is a front, bottom, and left side perspective view of an ionizer;

FIG. 2 is a rear, top, and right side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is a right side elevational view thereof.

The broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for an ionizer, as shown and described. 